xfs：修复旧版 h_size 修复的日志恢复缓冲区分配（CVE-2024-39472）
CVE编号
CVE-2024-39472利用情况
暂无补丁情况
N/A披露时间
2024-07-05漏洞描述
In the Linux kernel, the following vulnerability has been resolved: xfs: fix log recovery buffer allocation for the legacy h_size fixup Commit a70f9fe52daa ("xfs: detect and handle invalid iclog size set by mkfs") added a fixup for incorrect h_size values used for the initial umount record in old xfsprogs versions. Later commit 0c771b99d6c9 ("xfs: clean up calculation of LR header blocks") cleaned up the log reover buffer calculation, but stoped using the fixed up h_size value to size the log recovery buffer, which can lead to an out of bounds access when the incorrect h_size does not come from the old mkfs tool, but a fuzzer. Fix this by open coding xlog_logrec_hblks and taking the fixed h_size into account for this calculation.解决建议
建议您更新当前系统或软件至最新版，完成漏洞的修复。
参考链接 |
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| https://git.kernel.org/stable/c/45cf976008ddef4a9c9a30310c9b4fb2a9a6602a |
- 攻击路径 N/A
- 攻击复杂度 N/A
- 权限要求 N/A
- 影响范围 N/A
- 用户交互 N/A
- 可用性 N/A
- 保密性 N/A
- 完整性 N/A
| CWE-ID | 漏洞类型 |
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